diff --git a/htdocs/admin/modules.php b/htdocs/admin/modules.php
index f23713557d9..7921d558e58 100644
--- a/htdocs/admin/modules.php
+++ b/htdocs/admin/modules.php
@@ -31,7 +31,11 @@ require_once(DOL_DOCUMENT_ROOT."/core/lib/admin.lib.php");
 $langs->load("errors");
 $langs->load("admin");
 
-$mode=GETPOST('mode', 'alpha')?GETPOST('mode', 'alpha'):(isset($_SESSION['mode'])?$_SESSION['mode']:0);
+$mode=GETPOST('mode', 'alpha');
+if (!isset($mode)) {
+	if (isset($_SESSION['mode'])) {	$mode=$_SESSION['mode'];}
+	else {$mode=0;}
+}
 $mesg=GETPOST("mesg");
 $action=GETPOST('action', 'alpha');
 $value=GETPOST('value', 'alpha');